Hello Jan,
A very nice machine that you received. Maybe the supplied water is a very special juice. You should analyze the water carefully before you dump it.😂😂😂
The year before last, for Christmas, I bought the same D405 for little money on Ebay. After a thorough cleaning and an upgrade with the 2-channel remote control from Wilesco, the machine runs fine. I gave the D405 to my grandson. A remote control has to be installed for the children today, otherwise the interest will quickly wane.